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1# MIT License 

2 

3# Copyright (c) 2024 Jeremy Fix 

4 

5# Permission is hereby granted, free of charge, to any person obtaining a copy 

6# of this software and associated documentation files (the "Software"), to deal 

7# in the Software without restriction, including without limitation the rights 

8# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 

9# copies of the Software, and to permit persons to whom the Software is 

10# furnished to do so, subject to the following conditions: 

11 

12# The above copyright notice and this permission notice shall be included in 

13# all copies or substantial portions of the Software. 

14 

15# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 

16# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 

17# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 

18# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 

19# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 

20# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 

21# SOFTWARE. 

22 

23""" 

24Scripts to read and parse ALOS-2 data files 

25 

26The format is described in 

27https://www.eorc.jaxa.jp/ALOS/en/alos-2/pdf/product_format_description/PALSAR-2_xx_Format_CEOS_E_g.pdf 

28 

29See also the handbook : https://www.eorc.jaxa.jp/ALOS/en/doc/alos_userhb_en.pdf 

30for example p99 for the image line formats 

31 

32We have for High-sensitive/Fine Mode Full (Quad.) Polarimetry : 

33 IMG-{HH, HV, VH, VV}xxxxx__A 

34 LED-xxxx.1__A : SAR Leader file 

35 TRL-xxxx.1__A : SAR Trailer file 

36 VOL-xxxx.1__a : Volume directory file 

37 

38 With ALOS2044980750-150324-HBQR1 as Sene ID - Product ID 

39 SceneID : ALOS2044980750-150324 

40 which stands for ALOS2 satelitte 

41 04498 : orbit accumulation number 

42 0750 : scene frame number 

43 150324 : 2015/03/24 

44  

45 ProductID : HBQR1.1__A 

46 HBQ : High-sensitive mode Full (Quad.) polarimetry 

47 R : Right looking 

48 1.1 : Processing level 

49 _ : processing option not specified 

50 _ : map projection not specified 

51 A : Ascending orbit direction 

52 

53If you have different settings for the polarization, the structure of the files is described in Figure 3.1-5 p29 

54 

55""" 

56 

57from .vol_file import VolFile 

58from .trailer_file import TrailerFile 

59from .leader_file import LeaderFile 

60from .sar_image import SARImage 

61from .dataset import ALOSDataset